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Elevated Temperature Fluid Service & appendix V for B31.3 piping systems

HVN — Thu, 07 Sep 2017 12:59:38 GMT

I was reviewing B31.3 para 302.2.4, which deals with the option to allow a piping system to undergo pressure and/or temperatures variations that are above the design pressure and design temperature. Most of the calculations involved need to be done by the designer using his own set of calculations (see appendix V). In order to allow a piping system to undergo these excursions (and apply appendix V) above the design pressure and/or temperature, there are certain criteria needed to be met. Some of these requirements may not be so straightforward to calculate by hand, and for which AutoPIPE could be of assistance, like

302.2.4(b),
302.2.4(c),
possibly 302.2.4(e),
etc.

Would this be something that could be achieved by AutoPIPE within it's current version, or would this have to be an enhancement?

Now, when such requirements are met, appendix V can be used, which at it's turn also requires certain stresses to be calculated (e.g. V301.1.(b)). These could also be calculated from AutoPIPE (or extracted from AutoPIPE calculated that are anyhow).

Furthermore, para 302.2.4. refers to para 302.3.6, where Elevated Temperature Fluid Service (short ETFS) is mentioned. When ETFS is applicable, occasional loads may be calculated alternatively.

Would AutoPIPE be able to

apply the requirements of 302.3.6 when ETFS is applicable, and use a different method for determining occasional loads, and
determine if the requirements of 302.3.4 and appendix V are met, for as far as this lies in the possibilities of AutoPIPE calculations? Obviously certain requirements like 302.2.4(d) and (e) need to be verified by the designer

If not, is this something that could be logged as an enhancement?

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Elevated Temperature Fluid Service & appendix V for B31.3 piping systems